Finding the Fourth Proportional to 1,544.50, 2,131.50 and 881.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,544.50 : 2,131.50 = 881.58 : x
2. Step 2: Convert to fraction form
   1,544.50/2,131.50 = 881.58/x
3. Step 3: Cross multiply
   1,544.50x = 2,131.50 × 881.58
4. Step 4: Simplify right side
   1,544.50x = 1,879,087.77
5. Step 5: Solve for x
   x = 1,879,087.77/1,544.50
6. Step 6: Final answer
   x = 1,216.63